Number of permutations avoiding the consecutive pattern 34521.

A202216

Number of permutations avoiding the consecutive pattern 34521.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =24a(4) =119a(5) =708a(6) =4914a(7) =38976a(8) =347775a(9) =3447912a(10) =37601586a(11) =447346944a(12) =5765604885a(13) =80025786960

External references